1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Leya [2.2K]
4 years ago
8

"Two bacterial strains were obtained: Hfr: his(+) leu(+) bio(-) ton(S) Str(S) and F(-): his(-) leu(-) bio(+) ton(R) Str(R) . Aft

er an uninterrupted conjugation, you want to select ALL the F(-) recombinants that are leu(+). Which of the following media would you use for this selection?a. Complete medium containing streptomycinb. Minimal medium containing streptomycinc. Minimal medium containing leucine and streptomycind. Minimal medium containing sodium azide and leucinee. Minimal medium containing alanine, leucine, and streptomycinf. Minimal medium containing biotin, histidine, and streptomycing. Minimal medium containing alanine.h. Minimal medium containing alanine, biotin, and sodium azide."
Biology
1 answer:
MA_775_DIABLO [31]4 years ago
7 0

Answer:

B.Minimal medium containing streptomycin

Explanation:

Minimal medium containing streptomycin media would be use for this selection of the strain because majority of these will appeared on selective minimal medium plates with streptomycin

You might be interested in
5'-AUGGGUAACGGCGUG-3' is an mRNA sequence.
Reika [66]

Answer:

5 Amino acids

Explanation:

because each amino acid is made up of a codon (triplet base pairs code for one amino acid)

8 0
3 years ago
Which part of a DNA molecule is responsible for the direct coding of specific traits in an organism?
Allisa [31]
A. the number of hydrogen bonds that hold the strands of DNA together
4 0
3 years ago
The microbiology lab was able to isolate one of the organisms from Tara’s blood. Using a Kirby-Bauer test (disk diffusion assay)
Lynna [10]

Answer:

Amoxicillin and Tetracycline

Explanation:

Kirby-Bauer test is used to determine the susceptibility of a bacteria to an antibiotic. The target bacteria is grown on an agar plate. Antibiotic wafers are places on these plates. After some time, the plate is checked. Zone of inhibition (ZOI) is the area around the wafer where no bacteria survived. A reference table is checked for determining the susceptibility of the bacteria to a particular antibiotic. If the value of ZOI is smaller than the value required for susceptibility (S), it means that the bacteria is resistant to that antibiotic.

From the given data, ZOI for Amoxicillin is 25 and S value is ≥29 so the organism in question is resistant to Amoxicillin and Amoxicillin is not an appropriate choice for treatment. Similarly, ZOI for Tetracycline is 18 and S value is ≥19 hence it is not the appropriate choice for treatment.

5 0
3 years ago
Which point in this graph sows the beginning of a period of exponential growth? A. Point C B. Point D C. Point B D. Point A
Kipish [7]
I think it is point b
6 0
3 years ago
What do cells use to help transport other nutrients within the cell??
barxatty [35]
I learned this it the nuclear without that they would not have nutrients
3 0
3 years ago
Other questions:
  • Which domain includes organisms that are called extremophiles?
    5·1 answer
  • Which phrases describe homologous chromosomes?
    8·1 answer
  • what is a general difference in proteins made at free ribosomes and proteins made on rough endoplasmic reticulum?
    5·1 answer
  • Why can the wolf be both a secondary consumer as well as a tertiary consumer
    8·2 answers
  • What is 1b’s scientific name??
    8·1 answer
  • Ponds are ______.<br> A.<br> B.<br> C.<br> D.
    5·2 answers
  • Blood typing is less expensive and quicker for analyzing blood evidence than DNA profiling. Since many different people share th
    12·1 answer
  • Astronomers use spectrographs to collect light waves from stars in order to study characteristics of stars. What information can
    6·2 answers
  • Explain how a frog uses positive pressure to move air into and out of its lungs
    11·2 answers
  • In a normal distribution, the number of organisms exhibiting a phenotype variant near the lowest value is: _____________
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!